Heater unit



H. A. SILVERMAN.

HEATER UNIT.

APPLICATION FILED MAY s. 1921.

1,423,742. Patented July 25, 1922.

Il (n IHTML "IIIIIWHIIIIIIII" UNITED STATES PATENT OFFICE.

HARRY A. BILVEBHAN, 0l KEW YO, Y.

HEATER UNIT.

Speculation o! Letters Patent.

Patented July 25, 1922.4

appumuaaiea my s, im. semina. 407,052.

the borough of Bronx, city and State of New York, have invented an Improvement in. Heater Units, of which the following is a s eciication.

his invention relates to a heater unit and the object thereof is the rovision of a heater unit particularly `designed to be detacliably connected to a circulating system of a motor car radiator to prevent the same from freezing, although, as will be understood, the use of the invention is in no way so limited, as obviously it may be employed for heating ordinary hot water radiatorsfor thawing frozen water pi es and in numerous other ways without eparting from the invention. The heater made in accordance with this invention preferably com'- prises a member provided with a detachabl connected heat coil and means for detac ably connectingy the member'to a body to bel heated-for example, to a pipe forming a part ofthe circulating system of a motor vehicle radiator, and the construction is such that a redetermined surface or a part of `the heatlng member of the unit is re cessed or otherwise formed to conform with a portion of the ipe or other body which is to be heated by tiie unit. As hereinafter described that portion of the memberv of the unit so conforming to the body to be heated may be detachably connected to the member so that any one of a number of interchangeable parts may be employed, depending -upon the surface to be fitted which, as will be understood, isvgoverned byc the nature of the device to be heated.

The heater unit made in accordance with this invention will be hereinafter more particularly described in conjunction with the accompanying drawings, in which:-\

Figure 1 is an end elevation of my im.

proved heater unit.

Fig. 2 is a side elevation of the same.

Fig. 3 is an end elevation of another form of the invention.

Figs. 4 and 5 are end elevations of the removable member emplo ed in the form of the invention shown in ITig. 3, and

Fig.y 6 is an end elevation of a third form ofthe invention.l

Referrin to the drawing, particularly to Fi 1 an .2, the unit made in accordance wit my invention comprises a heater memominating in an undercut ber 10 made of any suitable metal or other material and of any desired configuration so as to have a face suicient for the purposes to which the heater unit is employed. In one face of themember 10 there isa recess 11 'running longitudinally thereof and of sucha shape as t6 conform approximately, at least, to the suction pipe leading from the radiator to the distributing pump in the cin-v culating system of a motor vehicle radiator. The heater member 10 is, as illustrated, provided with spring clips 12 and 13 connected to opposite sides thereof bscrews 14, 15- or otherwise, and the spring c ips 12 and 13 are adapted to sna over and engage the suction pipe in .r er to detachably connect the heater unit in position thereon and secure the same in lace so long asl its use may be necessary. n a centrally disposed position the unit member'lO is rovided with a bore 14 extending longitudinally from one `end to a oint adjacent the opposite end, and exten ing between the bore and the surface of the recessed portion I prefer to employ a plurality of holes or openings 15', although the use of these openings is optional. The bore 14 is adapted to receive a heat coil 16 of any suitable t pe which is connected to aplugblock 17 by meansv of set screws 18 or otherwise so that the inner surface of the plug block rests against the outer edges of ribs 19 provided for this purpose on the end of the unit memberl() to space the plug block therefrom in order that as small an amount of heat as possible may be transferred from the unit member 10 to thev plug block. The plug block, as usual,

is provided with terminals 20 adapted to be furnish the same to thenheat coil for heating the unit member 10 thereof to the require temperature so that the heat may be transferred from the unit member to the pipe 20 for example, or to any other body that it is desired to heat.

Referring to Figs. 3, 4 and 5, it will be seen that the unit member 10 may berecessed as indicated at 21 and the recess terrtion 22 so as to receive an interchangeab e member 23, the recessed face 24 thereof being adapted to conform to the surface of the body to be heated, it being understood that the inner portion of the interchangeable member 23 is provided with oppositely disposed ribs 24 ioo adapted to tit in the undercut recessed portion 22 of the unit member, and furthermore that this interchangeable member 23 mag'` be provided with a series of holes 25 exten lng therethrough so as to assist in the transfezI of the heat from the coil to the body to which it is desired to apply the heat. It will be furthermore understood that the recessed outer surface of the interchangeable member ma assume any form and that any number ofY interchangeable members may be employed, as for exam 1e as indicated in Figs. 4 and 5 in whic changeable members are indicated at 26avd 28 and their respective recessed surfaces at 27 and 29, these recessed surfaces being of different configurations depending, of course, upon the contour of the bod with which the are to contact for trans erring the heat from l the heater unit to this body which it is desired to heat.

By reference to Fig. 6 it will be seen that substantially the same effect as that obtained by the use of a series of interchangeable members, as described in connection with the form of the invention shown in Figs. 3, 4 and 5 may be obtained by the use of a unit member in which one face thereof is provided with a series of recesses of different configurations. As illustrated in F'ig. 6, the central recess 30, for example, may be made on a given radius, while the next adjacent recesses 31 and 31 may be made on the same or a different radius from the recess and the recesses 32 and 32 maybe made on the same radius-that is, different to either radius of the recess 30 or the radius of the recesses 31, 31 so that, for example, in use with a pi e of one diameter the contact will be brougy yt about through the recess 30, whereas with another pipe the recesses 3l, 31 may be made to contact with the surface of the pi e, and in the use of a third pipe of still dlfferent diameter the recesses 32 and 32 are made to contact with the surface of the pipe. Obviously, however, different forms of construction may be emplol ed without departing from the nature andys irit of the invention, as hereinbefore speci ed.

I claiml as my invention:

1. A heater unit comprisin a block having a surface adapted to conorm to a surface of a body to be heated, means for sethe intercuring the block to the bod to be heated, and a device for heating the block.

2. A heater unit comprising a block having a surface adapted to conform to a surface of a body to be heated, means for detachably connecting the said block to a body to be heated, and devices for heating the said block to a predetermined temperature.

3; A hea'ter unit comprising a rectangular block, one surface of which is adapted to conform to a surface of a body to be heated, spring clipssecured in o positely dis sed positions to opposite sur aces of the or securing t e same to a body to be heated, and devices for heating the saidblck to a predetermined temperature.

4. A heater unit com rising a block having a centrally disposed) bore andv a surface adapted to conform to a surface of a body to be heated means for securing the block to va body to be heated, and a heat coil and plug secured to the said block with the heat coil lin in the bone and the t e lock.

5. A heater unit comprising a rectangular block having a surface adapted to conform to a surface of a body to be heated and a centrally disposed bore therein, means for securing the block to a body to be heated, ribs connected to one end of the block, and a plug spaced from `heat coil and plug associated therewith and connected to the said block, with the heat coil lying in the bore of the block and the plug lying against the outer edges of the said ribs on the end of the block.

6. A heater unit comprising a rectangular block having one surface thereof recessed to conform to the outer surface of a water pipe, means for detachab-ly securing the block to a water pipe, and devlces for heating the said block to a predetermined temperature.

7. A heater unit comprising a rectangular block of metal having one surface recessed to conform to the outer surface of a heater pipe, spring clip members secured to the said y block for detachably connecting the same to a water pipe, and a heater coil and plug connected to the said block with the coil l ing in a bore in the block provided there `or and the plug spaced from the block at one end thereof.

I Signed by me this 2nd day of May,- 1921.

HARRY'A. sILvaRMAN.

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